[SOLVED]820 2915 b, After replacing a chip left fan don't work

[Noguinfor]

Hey Guys,

After replacing a GPU Left fan don't work... no missing components..

SMC_FAN_0_CTL = 0.2V ..

Has anyone ever had something like this ??

Thank you

 

[dukefawks]

Diode mode on that line? What GPU did you use, what date code?

 

[Noguinfor]

Ya, i have 0,021v in this line.. i compare with a good board and in the same line have 0.657v. short to ground??

 

[Noguinfor]

i have now removed a r5681 and the short comes pin 2 off r5681. check the bordview and pin 2 is not going anywhere..

 

[dukefawks]

Come on pin 2 is not going anywhere...... I assume you can figure out yourself with the schematic where it goes.

 

[Noguinfor]

i feel so stupid.. I was just looking at the boardview, I did not even think of the scheme... Do you think a reballing to smc resolves? Or do I have to replace it?

 

[dukefawks]

Tell me how reballing will solve a short, unless the SMC was already fucked with.
I also still don't know which GPUs you used.

 

[Noguinfor]

216 0810001 DC:1142, i already put the original and same issue!!

 

[Noguinfor]

it looks stupid but when hi heat the smc short gone ( pin 2 = 0.657v ).. i will replace the SMC and after i put the results!

 

[Noguinfor]

You can close the post Duke.. TY